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B (15 modules in series; system config shown) vs A (23 modules in series) 11 of 19 identical Swap Change batteries

Deye BOS-B (15 modules in series; system config shown) vs Deye BOS-A (23 modules in series)

BOS-B (15 modules in series; system config shown)
193.05 kWh 90.0 % round-trip LFP HV
Open battery page Datasheet PDF
VS
Deye BOS-A (23 modules in series)
BOS-A (23 modules in series)
158.98 kWh LFP HV
Open battery page Datasheet PDF
The verdict

B (15 modules in series; system config shown) leads on the differences that matter

The largest is usable energy: 34.07 kWh apart. 11 of 19 comparable parameters are identical, with 14 more left out because at least one datasheet does not publish them.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 19 parameters
Parameter B (15 modules in series; system config shown) A (23 modules in series) Difference
Usable energy 193.05 kWh 158.98 kWh 34.07 kWh apart
Max system capacity 214.5 kWh 176.6 kWh 37.9 kWh more room to expand
Nominal energy 214.50 kWh 176.64 kWh 37.86 kWh apart
Nominal voltage 720 V 883 V 163 V apart
Weight 1850.0 kg 1710.0 kg 140.0 kg lighter
Weight per kWh 9.6 kg/kWh 10.8 kg/kWh 1.2 kg/kWh lighter
Modules per stack 5-15 7-23 5-15 vs 7-23
Dimensions 1136x2150x800 mm 1921x1258x605 mm 1136x2150x800 mm vs 1921x1258x605 mm

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02

Full specification

Parameter B (15 modules in series; system config shown) A (23 modules in series) Difference
Capacity
Usable energy 193.05 kWh 158.98 kWh 34.07 kWh apart
Nominal energy 214.50 kWh 176.64 kWh 37.86 kWh apart
Depth of discharge 90 % 90 % Same
Max system capacity 214.5 kWh 176.6 kWh +37.9 kWh for B (15 modules in series; system config shown)
Modules per stack 5-15 7-23 5-15 vs 7-23
Power
Continuous discharge power - - Neither datasheet publishes this
Continuous charge power - - Neither datasheet publishes this
Peak discharge power - - Neither datasheet publishes this
Power per kWh - - Neither datasheet publishes this
Efficiency and lifetime
Round-trip efficiency 90.0 % - Not published by Deye
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth 90 % 90 % Same
Capacity at end of life 70 % 70 % Same
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class High voltage High voltage Same
Nominal voltage 720 V 883 V 163 V apart
Operating voltage - 745.2-993.6 V Not published by Deye
Cell chemistry LFP LFP Same
Active cell balancing Yes - Not published by Deye
Thermal management Yes - Not published by Deye
Built-in inverter
Inverter None (battery only) None (battery only) Same
Inverter power - - Neither datasheet publishes this
Grid connection - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 1850.0 kg 1710.0 kg -140.0 kg for A (23 modules in series)
Weight per kWh 9.6 kg/kWh 10.8 kg/kWh -1.2 kg/kWh for B (15 modules in series; system config shown)
Dimensions 1136x2150x800 mm 1921x1258x605 mm 1136x2150x800 mm vs 1921x1258x605 mm
Ingress protection IP20 IP20 Same
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -20 °C -20 °C Same
Max operating temperature 55 °C 55 °C Same
Warranty
Warranty 10 yrs 10 yrs Same
Warranted throughput - - Neither datasheet publishes this
03

More useful comparisons

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Deye BOS-B (15 modules in series; system config shown) vs Huawei LUNA2000-161KWH-2H1
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Deye BOS-A (23 modules in series) vs GoodWe LX C156-10
10 differences, the largest is usable energy
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Deye BOS-A (23 modules in series) vs GoodWe LX C138-10
10 differences, the largest is usable energy
04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.